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Code Issues Packages Projects Releases Wiki Activity

Get link metadata

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This commit is contained in:
M66B
2022-05-31 16:55:59 +02:00
parent 042ba523c1
commit 4da8ecf4ff
6 changed files with 321 additions and 143 deletions
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197
app/src/main/java/eu/faircode/email/FragmentDialogInsertLink.java
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@@ -22,37 +22,66 @@ package eu.faircode.email;
import static android.app.Activity.RESULT_OK;
import android.app.Dialog;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.DialogInterface;
import android.net.Uri;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.text.style.URLSpan;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import javax.net.ssl.HttpsURLConnection;
public class FragmentDialogInsertLink extends FragmentDialogBase {
private EditText etLink;
private EditText etTitle;
private static final int METADATA_CONNECT_TIMEOUT = 10 * 1000; // milliseconds
private static final int METADATA_READ_TIMEOUT = 15 * 1000; // milliseconds
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
outState.putString("fair:link", etLink == null ? null : etLink.getText().toString());
outState.putString("fair:text", etTitle == null ? null : etTitle.getText().toString());
super.onSaveInstanceState(outState);
}
@NonNull
@Override
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
Uri uri = getArguments().getParcelable("uri");
Bundle args = getArguments();
Uri uri = args.getParcelable("uri");
String title = args.getString("title");
View view = LayoutInflater.from(getContext()).inflate(R.layout.dialog_insert_link, null);
final Context context = getContext();
View view = LayoutInflater.from(context).inflate(R.layout.dialog_insert_link, null);
etLink = view.findViewById(R.id.etLink);
final TextView tvInsecure = view.findViewById(R.id.tvInsecure);
etTitle = view.findViewById(R.id.etTitle);
final Button btnMetadata = view.findViewById(R.id.btnMetadata);
final ProgressBar pbWait = view.findViewById(R.id.pbWait);
etLink.addTextChangedListener(new TextWatcher() {
@Override
@@ -65,27 +94,116 @@ public class FragmentDialogInsertLink extends FragmentDialogBase {
@Override
public void afterTextChanged(Editable editable) {
if (tvInsecure == null)
if (tvInsecure == null || btnMetadata == null)
return;
Uri uri = Uri.parse(editable.toString());
tvInsecure.setVisibility(!uri.isOpaque() &&
"http".equals(uri.getScheme()) ? View.VISIBLE : View.GONE);
tvInsecure.setVisibility(UriHelper.isSecure(uri) ? View.GONE : View.VISIBLE);
btnMetadata.setEnabled(UriHelper.isHyperLink(uri));
}
});
if (savedInstanceState == null)
etLink.setText(uri == null ? "https://" : uri.toString());
else
etLink.setText(savedInstanceState.getString("fair:link"));
btnMetadata.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Bundle args = new Bundle();
args.putString("url", etLink.getText().toString());
return new AlertDialog.Builder(getContext())
new SimpleTask<String>() {
@Override
protected void onPreExecute(Bundle args) {
btnMetadata.setEnabled(false);
pbWait.setVisibility(View.VISIBLE);
}
@Override
protected void onPostExecute(Bundle args) {
btnMetadata.setEnabled(true);
pbWait.setVisibility(View.GONE);
}
@Override
protected String onExecute(Context context, Bundle args) throws Throwable {
String url = args.getString("url");
URL base = new URL(url);
HttpURLConnection connection = (HttpURLConnection) base.openConnection();
connection.setRequestMethod("GET");
connection.setReadTimeout(METADATA_READ_TIMEOUT);
connection.setConnectTimeout(METADATA_CONNECT_TIMEOUT);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("User-Agent", WebViewEx.getUserAgent(context));
connection.connect();
try {
int status = connection.getResponseCode();
if (status != HttpURLConnection.HTTP_OK) {
String responseText = Helper.readStream(connection.getInputStream());
throw new IOException("HTTP " + status + ": " + responseText);
}
// <title>...
// <meta name="description" content="...
// <meta property="og:title" content="...
// <meta property="twitter:title" content="...
Document doc = JsoupEx.parse(connection.getInputStream(), StandardCharsets.UTF_8.name(), url);
Element title = doc.select("title").first();
if (title != null && !TextUtils.isEmpty(title.text()))
return title.text();
Element description = doc.select("meta[name=description]").first();
if (description != null && !TextUtils.isEmpty(description.attr("content")))
return description.attr("content");
Element ogTitle = doc.select("meta[property=og:title]").first();
if (ogTitle != null && !TextUtils.isEmpty(ogTitle.attr("content")))
return ogTitle.attr("content");
Element twitterTitle = doc.select("meta[property=twitter:title]").first();
if (twitterTitle != null && !TextUtils.isEmpty(twitterTitle.attr("content")))
return twitterTitle.attr("content");
return null;
} finally {
connection.disconnect();
}
}
@Override
protected void onExecuted(Bundle args, String text) {
if (TextUtils.isEmpty(text))
etTitle.setText(null);
else
etTitle.setText(text.replaceAll("\\s+", " "));
}
@Override
protected void onException(Bundle args, Throwable ex) {
Log.unexpectedError(getParentFragmentManager(), ex, !(ex instanceof IOException));
}
}.execute(FragmentDialogInsertLink.this, args, "link:meta");
}
});
if (savedInstanceState == null) {
String link = (uri == null ? "https://" : uri.toString());
etLink.setText(link);
etTitle.setText(link.equals(title) ? null : title);
} else {
etLink.setText(savedInstanceState.getString("fair:link"));
etTitle.setText(savedInstanceState.getString("fair:text"));
}
pbWait.setVisibility(View.GONE);
return new AlertDialog.Builder(context)
.setView(view)
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String link = etLink.getText().toString();
getArguments().putString("link", link);
args.putString("link", etLink.getText().toString());
args.putString("title", etTitle.getText().toString());
sendResult(RESULT_OK);
}
})
@@ -98,4 +216,59 @@ public class FragmentDialogInsertLink extends FragmentDialogBase {
})
.create();
}
static Bundle getArguments(EditText etBody) {
Uri uri = null;
int start = etBody.getSelectionStart();
int end = etBody.getSelectionEnd();
URLSpan[] spans = etBody.getText().getSpans(start, start, URLSpan.class);
if (spans != null && spans.length > 0) {
start = etBody.getText().getSpanStart(spans[0]);
end = etBody.getText().getSpanEnd(spans[0]);
String url = spans[0].getURL();
if (url != null) {
uri = Uri.parse(url);
if (uri.getScheme() == null)
uri = null;
}
}
if (uri == null)
try {
ClipboardManager cbm = Helper.getSystemService(etBody.getContext(), ClipboardManager.class);
if (cbm != null && cbm.hasPrimaryClip()) {
String link = cbm.getPrimaryClip().getItemAt(0).coerceToText(etBody.getContext()).toString();
uri = Uri.parse(link);
if (uri.getScheme() == null)
uri = null;
}
} catch (Throwable ex) {
Log.w(ex);
/*
java.lang.SecurityException: Permission Denial: opening provider org.chromium.chrome.browser.util.ChromeFileProvider from ProcessRecord{43c6094 11175:eu.faircode.email/u0a73} (pid=11175, uid=10073) that is not exported from uid 10080
at android.os.Parcel.readException(Parcel.java:1692)
at android.os.Parcel.readException(Parcel.java:1645)
at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:4214)
at android.app.ActivityThread.acquireProvider(ActivityThread.java:5584)
at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2239)
at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1520)
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1133)
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1093)
at android.content.ClipData$Item.coerceToText(ClipData.java:340)
*/
}
String title = (start >= 0 && end > start ? etBody.getText().subSequence(start, end).toString() : "");
Bundle args = new Bundle();
args.putParcelable("uri", uri);
args.putInt("start", start);
args.putInt("end", end);
args.putString("title", title);
return args;
}
}